* removes the dead codes

* sync

* support test cases work with specifying the optional plugins

* Update istio docs according latest istio release

* Rename skywalingadapter.yml to skywalkingadapter.yml

Rename typo file name.

* Update README.md

Add a link to doc.

* Update README.md

* Polish doc, remove old OAL description.

* Add a new use case.

* Add 360金融 to powered-by.md

* Update powered-by.md

Changr order.

* add graphql getServiceInstance instanceUUID field.

* add graphql getServiceInstance instanceUUID field.

* add graphql getServiceInstance instanceUUID field.

* sync query-protocol repo

* add instanceUUID field e2e

* add instanceUUID field e2e

* add instanceUUID field e2e

* add instanceUUID field e2e

* Fix #3402

* Fix unecessary blankline

* Optimize rebuild logic

* Fix checkstyle fail

* Add concurrency test

* Fix text mistakes

* Optimize refresh logic && new test for return clients never change by refresh logic

* Make unit test more clearness

* Add more unit test && fix a bug

* Rename variable && format by skywalking style

* Modify plugin test run.sh script parameter error

* shell fun error, delete ()

* delete space line

* immigrate spring async scenario

* fix rat

* Fix async not in effect

* immigrate spring scenario

* immigrate spring scenario

* fix

* immigrate spring scenario

* rollback

* fix log4j2.xml

Remove duplicated doc, we have a more clear one now.

* gateway-testcase

* support docker-compose

* sync

* support docker-compose

* force rm container

* solrj-7.x-scenario

* fix license header

* fix actualData.yml

* verify Jenkins run on distribution

* test Jenkinsfile v2

* test Jenkinsfile v3, God bless

* test V4, God Bless

* test v5

* rollback

* update opertaion of post

* immigrate spring async scenario

* fix rat

* Fix async not in effect

And group the test cases according to their consuming time

* Is it a typo or not?

* delete datasource-settings.properties

* handle 'metadataQueryMaxSize'

* delete DynamicModuleConfig.java

* modify mysql config

* parsing yaml to support the configuration for multiple properties

* delete datasource-settings.properties

* modify doc

* add properties for docker-entrypoint.sh

* add testLoadConfig()

* upd powered-by.md

* Update powered-by.md

Change order only.

* immigrate dubbo

* provides a jvm-container

* add faq with es.

* Update README.md

* up ui

* support ehcache 2.x

* This dependency should be added.

* Fix again.

* remove profiles and rename the package

* remove profiles

* Check package name org.apache.skywalking

* Only check REAL sources

* Exclude a dependency for test.

* Fix 5 places of using wrong Strings util.

* Support namespace in Nacos cluster/configuration

* Give Nacos default namespace as per config/registry

* code cleanup: remove unnecessary and optimize the function's parameters.

* fix code style.

Provide the codebase of plugin tests. Make the plugin test in the CI loop.